initial import of gmodule.

Makefile.am

@@ -1,8 +1,12 @@
 ## Process this file with automake to produce Makefile.in
 
+SUBDIRS = gmodule
+
 configincludedir = $(pkglibdir)/include
 
 bin_SCRIPTS=glib-config
+BUILT_SOURCES=glib-config
+glib-config: glib-config.in
 
 EXTRA_DIST =	\
 		glib.m4 \

configure.in

@@ -222,4 +222,87 @@ if test $gtk_ok = no; then
 fi
 AC_MSG_RESULT($gtk_ok)
 
-AC_OUTPUT([Makefile glib-config],[chmod +x glib-config])
+dnl ***********************
+dnl *** g_module checks ***
+dnl ***********************
+G_MODULE_LIBS=
+G_MODULE_LDFLAGS=
+G_MODULE_IMPL=
+G_MODULE_NEED_USCORE=0
+G_MODULE_HAVE_DLERROR=0
+dnl *** dlopen() in system libraries
+if test -z "$G_MODULE_IMPL"; then
+	AC_CHECK_FUNC(dlopen,
+		G_MODULE_IMPL=G_MODULE_IMPL_DL
+	,)
+fi
+dnl *** dlopen() in libdl
+if test -z "$G_MODULE_IMPL"; then
+	AC_CHECK_LIB(dl, dlopen,
+		G_MODULE_LIBS=-ldl
+		G_MODULE_IMPL=G_MODULE_IMPL_DL
+	,)
+fi
+dnl *** shl_load() in libdld (HP-UX)
+if test -z "$G_MODULE_IMPL"; then
+	G_MODULE_LDFLAGS='-Wl,-E'
+	AC_CHECK_LIB(dld, shl_load,
+		G_MODULE_LIBS=-ldld
+		G_MODULE_IMPL=G_MODULE_IMPL_DLD
+	,)
+fi
+dnl *** additional checks for G_MODULE_IMPL_DL
+if test "$G_MODULE_IMPL" = "G_MODULE_IMPL_DL"; then
+	if test -d /usr/include/linux; then
+		G_MODULE_LDFLAGS='-rdynamic'
+	fi
+	LIBS_orig="$LIBS"
+	LDFLAGS_orig="$LDFLAGS"
+	LIBS="$LIBS $G_MODULE_LIBS"
+	LDFLAGS="$LDFLAGS $G_MODULE_LDFLAGS"
+dnl *** check whether we need preceeding underscores
+	AC_MSG_CHECKING(for preceeding underscore in symbols)
+	AC_CACHE_VAL(glib_cv_uscore,[
+		AC_TRY_RUN([
+		#include <dlfcn.h>
+		int glib_underscore_test (void) { return 42; }
+		int main() {
+		  void *f1 = (void*)0, *f2 = (void*)0, *handle;
+		  handle = dlopen ((void*)0, 0);
+		  if (handle) {
+		    f1 = dlsym (handle, "glib_underscore_test");
+		    f2 = dlsym (handle, "_glib_underscore_test");
+		  } return !(f2 && !f1);
+		}],
+			glib_cv_uscore=yes
+			G_MODULE_NEED_USCORE=1
+		,
+			glib_cv_uscore=no
+			G_MODULE_NEED_USCORE=0
+		,)
+	])
+	AC_MSG_RESULT($glib_cv_uscore)
+	LDFLAGS="$LDFLAGS_orig"
+dnl *** check for having dlerror()
+	AC_CHECK_FUNC(dlerror,
+		G_MODULE_HAVE_DLERROR=1,
+		G_MODULE_HAVE_DLERROR=0)
+	LIBS="$LIBS_orig"
+fi
+dnl *** done, have e got an implementation?
+if test -z "$G_MODULE_IMPL"; then
+	G_MODULE_IMPL=0
+fi
+AC_SUBST(G_MODULE_IMPL)
+AC_SUBST(G_MODULE_LIBS)
+AC_SUBST(G_MODULE_LDFLAGS)
+AC_SUBST(G_MODULE_HAVE_DLERROR)
+AC_SUBST(G_MODULE_NEED_USCORE)
+
+
+AC_OUTPUT([
+Makefile
+glib-config
+gmodule/gmoduleconf.h
+gmodule/Makefile
+],[chmod +x glib-config])

glib-config.in

@@ -4,14 +4,29 @@ prefix=@prefix@
 exec_prefix=@exec_prefix@
 exec_prefix_set=no
 
-usage="\
+usage()
-Usage: glib-config [--prefix[=DIR]] [--exec-prefix[=DIR]] [--version] [--libs] [--cflags]"
+{
+	cat <<EOF
+Usage: glib-config [OPTIONS] [LIBRARIES]
+Options:
+	[--prefix[=DIR]]
+	[--exec-prefix[=DIR]]
+	[--version]
+	[--libs]
+	[--cflags]
+Libraries:
+	glib
+	gmodule
+EOF
+	exit $1
+}
 
 if test $# -eq 0; then
-      echo "${usage}" 1>&2
+	usage 1 1>&2
-      exit 1
 fi
 
+lib_glib=yes
+
 while test $# -gt 0; do
   case "$1" in
   -*=*) optarg=`echo "$1" | sed 's/[-_a-zA-Z0-9]*=//'` ;;
@@ -26,32 +41,57 @@ while test $# -gt 0; do
       fi
       ;;
     --prefix)
-      echo $prefix
+      echo_prefix=yes
       ;;
     --exec-prefix=*)
       exec_prefix=$optarg
       exec_prefix_set=yes
       ;;
     --exec-prefix)
-      echo $exec_prefix
+      echo_exec_prefix=yes
       ;;
     --version)
       echo @GLIB_VERSION@
+      exit 0
       ;;
     --cflags)
-      if test @includedir@ != /usr/include ; then
+      if test "@includedir@" != /usr/include ; then
-        includes=-I@includedir@
+        includes="-I@includedir@"
       fi
-      echo -I@libdir@/glib/include $includes
+      echo_cflags=yes
       ;;
     --libs)
-      echo -L@libdir@ -lglib-@LT_RELEASE@
+      echo_libs=yes
+      ;;
+    glib)
+      lib_glib=yes
+      ;;
+    gmodule)
+      lib_gmodule=yes
       ;;
     *)
-      echo "${usage}" 1>&2
+      usage 1 1>&2
-      exit 1
       ;;
   esac
   shift
 done
 
+if test "$echo_prefix" = "yes"; then
+	echo $prefix
+fi
+if test "$echo_exec_prefix" = "yes"; then
+	echo $exec_prefix
+fi
+if test "$echo_cflags" = "yes"; then
+	echo -I@libdir@/glib/include $includes
+fi
+if test "$echo_libs" = "yes"; then
+	libs=""
+	if test "$lib_glib" = "yes"; then
+		libs="$libs -lglib-@LT_RELEASE@"
+	fi
+	if test "$lib_gmodule" = "yes"; then
+		libs="@G_MODULE_LDFLAGS@ -lgmodule-@LT_RELEASE@ $libs @G_MODULE_LIBS@"
+	fi
+	echo "-L@libdir@ $libs"
+fi

glib/Makefile.am

@@ -1,8 +1,12 @@
 ## Process this file with automake to produce Makefile.in
 
+SUBDIRS = gmodule
+
 configincludedir = $(pkglibdir)/include
 
 bin_SCRIPTS=glib-config
+BUILT_SOURCES=glib-config
+glib-config: glib-config.in
 
 EXTRA_DIST =	\
 		glib.m4 \

gmodule/AUTHORS

@@ -0,0 +1 @@
+Tim Janik <timj@gtk.org>

gmodule/COPYING

@@ -0,0 +1,482 @@
+		  GNU LIBRARY GENERAL PUBLIC LICENSE
+		       Version 2, June 1991
+
+ Copyright (C) 1991 Free Software Foundation, Inc.
+    		    59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+[This is the first released version of the library GPL.  It is
+ numbered 2 because it goes with version 2 of the ordinary GPL.]
+
+			    Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+Licenses are intended to guarantee your freedom to share and change
+free software--to make sure the software is free for all its users.
+
+  This license, the Library General Public License, applies to some
+specially designated Free Software Foundation software, and to any
+other libraries whose authors decide to use it.  You can use it for
+your libraries, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
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+
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+
+		  GNU LIBRARY GENERAL PUBLIC LICENSE
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+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE
+LIBRARY IS WITH YOU.  SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME
+THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
+WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY
+AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU
+FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
+CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
+LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
+RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
+FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
+SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+DAMAGES.
+
+		     END OF TERMS AND CONDITIONS
+
+           How to Apply These Terms to Your New Libraries
+
+  If you develop a new library, and you want it to be of the greatest
+possible use to the public, we recommend making it free software that
+everyone can redistribute and change.  You can do so by permitting
+redistribution under these terms (or, alternatively, under the terms of the
+ordinary General Public License).
+
+  To apply these terms, attach the following notices to the library.  It is
+safest to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least the
+"copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the library's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License as published by the Free Software Foundation; either
+    version 2 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Library General Public License for more details.
+
+    You should have received a copy of the GNU Library General Public
+    License along with this library; if not, write to the 
+    Free Software Foundation, Inc., 59 Temple Place - Suite 330, 
+    Boston, MA  02111-1307  USA.
+
+Also add information on how to contact you by electronic and paper mail.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the library, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the
+  library `Frob' (a library for tweaking knobs) written by James Random Hacker.
+
+  <signature of Ty Coon>, 1 April 1990
+  Ty Coon, President of Vice
+
+That's all there is to it!

gmodule/ChangeLog

@@ -0,0 +1,3 @@
+Sun Aug  9 10:31:05 1998  Tim Janik  <timj@gtk.org>
+
+	* ChangeLog start for gmodule.

gmodule/Makefile.am

@@ -0,0 +1,50 @@
+## Process this file with automake to produce Makefile.in
+
+INCLUDES = -I$(top_srcdir) -I$(top_srcdir)/gmodule
+
+EXTRA_DIST =	\
+		gmoduleconf.h.in
+
+BUILT_SOURCES = gmoduleconf.h
+gmoduleconf.h:	gmoduleconf.h.in
+
+include_HEADERS = \
+		gmodule.h
+
+lib_LTLIBRARIES = libgmodule-1.1.la libgplugin_a.la libgplugin_b.la
+
+libgmodule_1_1_la_SOURCES = gmodule.c
+libgmodule_1_1_la_LDFLAGS = @G_MODULE_LDFLAGS@ -version-info $(LT_CURRENT):$(LT_REVISION):$(LT_AGE)
+libgmodule_1_1_la_LIBADD = @G_MODULE_LIBS@ -lglib-@LT_RELEASE@
+
+libgplugin_a_la_SOURCES = libgplugin_a.c
+libgplugin_a_la_LDFLAGS = @G_MODULE_LDFLAGS@
+libgplugin_a_la_LIBADD = @G_MODULE_LIBS@ -lglib-@LT_RELEASE@
+
+libgplugin_b_la_SOURCES = libgplugin_b.c
+libgplugin_b_la_LDFLAGS = @G_MODULE_LDFLAGS@
+libgplugin_b_la_LIBADD = @G_MODULE_LIBS@ -lglib-@LT_RELEASE@
+
+noinst_PROGRAMS = testgmodule
+testgmodule_LDFLAGS += @G_MODULE_LDFLAGS@
+testgmodule_LDADD = libgmodule-@LT_RELEASE@.la -lglib-@LT_RELEASE@ @G_MODULE_LIBS@
+
+.PHONY: files release
+
+files:
+	@files=`ls $(DISTFILES) 2> /dev/null `; for p in $$files; do \
+	  echo $$p; \
+	done
+
+install-libLTLIBRARIES: libgmodule-1.1.la
+	@$(NORMAL_INSTALL)
+	$(mkinstalldirs) $(DESTDIR)$(libdir)
+	@list='libgmodule-1.1.la'; for p in $$list; do \
+	 if test -f $$p; then \
+	  echo "$(LIBTOOL)  --mode=install $(INSTALL_DATA) $$p $(DESTDIR)$(libdir)/$$p"; \
+	  $(LIBTOOL)  --mode=install $(INSTALL_DATA) $$p $(DESTDIR)$(libdir)/$$p; \
+	 else :; fi; \
+	done
+
+release:
+	$(MAKE) dist distdir=$(PACKAGE)`date +"%y%m%d"`

gmodule/gmodule-dl.c

@@ -0,0 +1,108 @@
+/* GMODULE - GLIB wrapper code for dynamic module loading
+ * Copyright (C) 1998 Tim Janik
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+#include <dlfcn.h>
+
+/* Perl includes <nlist.h> and <link.h> instead of <dlfcn.h> on some systmes? */
+
+
+/* dlerror() is not implemented on all systems
+ */
+#ifndef	G_MODULE_HAVE_DLERROR
+#  ifdef __NetBSD__
+#    define dlerror()	g_strerror (errno)
+#  else /* !__NetBSD__ */
+/* could we rely on errno's state here? */
+#    define dlerror()	"unknown dl-error"
+#  endif /* !__NetBSD__ */
+#endif	/* G_MODULE_HAVE_DLERROR */
+
+/* some flags are missing on some systems, so we provide
+ * harmless defaults.
+ * The Perl sources say, RTLD_LAZY needs to be defined as (1),
+ * at least for Solaris 1.
+ */
+#ifndef	RTLD_GLOBAL
+#define	RTLD_GLOBAL	0
+#endif	/* RTLD_GLOBAL */
+#ifndef	RTLD_LAZY
+#define	RTLD_LAZY	1
+#endif	/* RTLD_LAZY */
+#ifndef	RTLD_NOW
+#define	RTLD_NOW	0
+#endif	/* RTLD_NOW */
+
+
+/* --- functions --- */
+static gpointer
+_g_module_open (const gchar    *file_name,
+		gboolean        bind_lazy)
+{
+  gpointer handle;
+
+  handle = dlopen (file_name, RTLD_GLOBAL | (bind_lazy ? RTLD_LAZY : RTLD_NOW));
+  if (!handle)
+    g_module_set_error (dlerror ());
+
+  return handle;
+}
+
+static gpointer
+_g_module_self (void)
+{
+  gpointer handle;
+
+  /* to query symbols from the program itself, special link options
+   * are required on some systems.
+   */
+
+  handle = dlopen (NULL, RTLD_GLOBAL | RTLD_LAZY);
+  if (!handle)
+    g_module_set_error (dlerror ());
+
+  return handle;
+}
+
+static void
+_g_module_close (gpointer        *handle_p,
+		 gboolean         is_unref)
+{
+  /* are there any systems out there that have dlopen()/dlclose()
+   * without a reference count implementation?
+   */
+  is_unref |= 1;
+
+  if (is_unref)
+    {
+      if (dlclose (*handle_p) != 0)
+	g_module_set_error (dlerror ());
+    }
+}
+
+static gpointer
+_g_module_symbol (gpointer       *handle_p,
+		  const gchar    *symbol_name)
+{
+  gpointer p;
+
+  p = dlsym (*handle_p, symbol_name);
+  if (!p)
+    g_module_set_error (dlerror ());
+
+  return p;
+}

gmodule/gmodule-dld.c

@@ -0,0 +1,82 @@
+/* GMODULE - GLIB wrapper code for dynamic module loading
+ * Copyright (C) 1998 Tim Janik
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+#include <dl.h>
+
+
+/* some flags are missing on some systems, so we provide
+ * harmless defaults.
+ */
+#ifndef	DYNAMIC_PATH
+#define	DYNAMIC_PATH	0
+#endif	/* DYNAMIC_PATH */
+
+/* should we have BIND_TOGETHER here as well? */
+#define	CONST_BIND_FLAGS	(BIND_NONFATAL | BIND_VERBOSE)
+
+
+/* --- functions --- */
+static gpointer
+_g_module_open (const gchar    *file_name,
+		gboolean        bind_lazy)
+{
+  gpointer handle;
+
+  handle = shl_load (file_name, CONST_BIND_FLAGS | (bind_lazy ? BIND_DEFERRED : BIND_IMMEDIATE), 0);
+  if (!handle)
+    g_module_set_error (g_strerror (errno));
+
+  return handle;
+}
+
+static gpointer
+_g_module_self (void)
+{
+  gpointer handle;
+
+  handle = PROG_HANDLE;
+  if (!handle)
+    g_module_set_error (g_strerror (errno));
+
+  return handle;
+}
+
+static void
+_g_module_close (gpointer        *handle_p,
+		 gboolean         is_unref)
+{
+  if (!is_unref)
+    {
+      if (shl_unload (*handle_p) != 0)
+	g_module_set_error (g_strerror (errno));
+    }
+}
+
+static gpointer
+_g_module_symbol (gpointer       *handle_p,
+		  const gchar    *symbol_name)
+{
+  gpointer p = NULL;
+
+  /* should we restrict lookups to TYPE_PROCEDURE?
+   */
+  if (shl_findsym (handle_p, symbol_name, TYPE_UNDEFINED, &p) != 0 || p == NULL)
+    g_module_set_error (g_strerror (errno));
+  
+  return p;
+}

gmodule/gmodule.c

@@ -0,0 +1,270 @@
+/* GLIB - Library of useful routines for C programming
+ * Copyright (C) 1995-1997  Peter Mattis, Spencer Kimball and Josh MacDonald
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+#include	"gmodule.h"
+#include	"gmoduleconf.h"
+#include	<errno.h>
+#include	<string.h>
+
+
+/* We maintain a list of modules, so we can reference count them.
+ * That's needed because some platforms don't support refernce counts on
+ * modules (http://www.stat.umn.edu/~luke/xls/projects/dlbasics/dlbasics.html).
+ * Also, the module for the program itself is kept seperatedly for
+ * faster access.
+ */
+
+
+/* --- structures --- */
+struct _GModule
+{
+  gchar	*file_name;
+  gpointer handle;
+  guint ref_count;
+  GModule *next;
+};
+
+
+/* --- prototypes --- */
+static gpointer		_g_module_open		(const gchar	*file_name,
+						 gboolean	 bind_lazy);
+static void		_g_module_close		(gpointer	*handle_p,
+						 gboolean	 is_unref);
+static gpointer		_g_module_self		(void);
+static gpointer		_g_module_symbol	(gpointer	*handle_p,
+						 const gchar	*symbol_name);
+static inline void	g_module_set_error	(const gchar	*error);
+static inline GModule*	g_module_find_by_handle (gpointer	 handle);
+static inline GModule*	g_module_find_by_name	(const gchar	*name);
+
+
+/* --- variables --- */
+static GModule	*modules = NULL;
+static GModule	*main_module = NULL;
+static gchar	*module_error = NULL;
+
+
+/* --- inline functions --- */
+static inline GModule*
+g_module_find_by_handle (gpointer handle)
+{
+  GModule *module;
+
+  for (module = modules; module; module = module->next)
+    if (handle == module->handle)
+      return module;
+  return NULL;
+}
+
+static inline GModule*
+g_module_find_by_name (const gchar *name)
+{
+  GModule *module;
+
+  for (module = modules; module; module = module->next)
+    if (strcmp (name, module->file_name) == 0)
+      return module;
+  return NULL;
+}
+
+static inline void
+g_module_set_error (const gchar *error)
+{
+  if (module_error)
+    g_free (module_error);
+  if (error)
+    module_error = g_strdup (error);
+  else
+    module_error = NULL;
+  errno = 0;
+}
+
+
+/* --- include platform specifc code --- */
+#define	CHECK_ERROR(rv)	{ g_module_set_error (NULL); }
+#if	(G_MODULE_IMPL == G_MODULE_IMPL_DL)
+#include "gmodule-dl.c"
+#elif	(G_MODULE_IMPL == G_MODULE_IMPL_DLD)
+#include "gmodule-dld.c"
+#else
+#undef	CHECK_ERROR
+#define	CHECK_ERROR(rv)	{ g_module_set_error ("unsupported"); return rv; }
+#endif	/* no implementation */
+
+
+/* --- functions --- */
+gboolean
+g_module_supported (void)
+{
+  CHECK_ERROR (FALSE);
+
+  return TRUE;
+}
+
+GModule*
+g_module_open (const gchar    *file_name,
+	       GModuleFlags    flags)
+{
+  GModule *module;
+  gpointer handle;
+
+  CHECK_ERROR (NULL);
+
+  if (!file_name)
+    {
+      if (!main_module)
+	{
+	  handle = _g_module_self ();
+	  if (handle)
+	    {
+	      main_module = g_new (GModule, 1);
+	      main_module->file_name = NULL;
+	      main_module->ref_count = 1;
+	      main_module->next = NULL;
+	      main_module->handle = handle;
+	    }
+	}
+
+      return main_module;
+    }
+
+  /* we first search the module list by name */
+  module = g_module_find_by_name (file_name);
+  if (module)
+    {
+      module->ref_count++;
+
+      return module;
+    }
+
+  /* open the module */
+  handle = _g_module_open (file_name, (flags & G_MODULE_BIND_LAZY) != 0);
+  if (handle)
+    {
+      GModule *module;
+
+      /* search the module list by handle, since file names are not unique */
+      module = g_module_find_by_handle (handle);
+      if (module)
+	{
+	  _g_module_close (&module->handle, TRUE);
+	  module->ref_count++;
+	  g_module_set_error (NULL);
+
+	  return module;
+	}
+
+      module = g_new (GModule, 1);
+      module->file_name = g_strdup (file_name);
+      module->handle = handle;
+      module->ref_count = 1;
+      module->next = modules;
+      modules = module;
+
+      return module;
+    }
+
+  return NULL;
+}
+
+gboolean
+g_module_close (GModule        *module)
+{
+  CHECK_ERROR (FALSE);
+
+  g_return_val_if_fail (module != NULL, FALSE);
+  g_return_val_if_fail (module->ref_count > 0, FALSE);
+
+  if (module != main_module)
+    module->ref_count--;
+
+  if (!module->ref_count)
+    {
+      GModule *last;
+      GModule *node;
+
+      _g_module_close (&module->handle, FALSE);
+      g_free (module->file_name);
+
+      last = NULL;
+      node = modules;
+      while (node)
+	{
+	  if (node == module)
+	    {
+	      if (last)
+		last->next = node->next;
+	      else
+		modules = node->next;
+	      break;
+	    }
+	  last = node;
+	  node = last->next;
+	}
+      g_free (module);
+    }
+
+  return module_error == NULL;
+}
+
+gchar*
+g_module_error (void)
+{
+  return module_error;
+}
+
+gboolean
+g_module_symbol (GModule        *module,
+		 const gchar    *symbol_name,
+		 gconstpointer  *symbol)
+{
+  if (symbol)
+    *symbol = NULL;
+  CHECK_ERROR (FALSE);
+
+  g_return_val_if_fail (module != NULL, FALSE);
+  g_return_val_if_fail (symbol_name != NULL, FALSE);
+  g_return_val_if_fail (symbol != NULL, FALSE);
+
+#ifdef	G_MODULE_NEED_USCORE
+  symbol_name = g_strconcat ("_", symbol_name, NULL);
+  *symbol = _g_module_symbol (&module->handle, symbol_name);
+  g_free (symbol_name);
+#else	/* !G_MODULE_NEED_USCORE */
+  *symbol = _g_module_symbol (&module->handle, symbol_name);
+#endif	/* !G_MODULE_NEED_USCORE */
+
+  if (module_error)
+    {
+      *symbol = NULL;
+      return FALSE;
+    }
+
+  return TRUE;
+}
+
+gchar*
+g_module_name (GModule *module)
+{
+  g_return_val_if_fail (module != NULL, NULL);
+
+  if (module == main_module)
+    return "main";
+
+  return module->file_name;
+}

gmodule/gmoduleconf.h.in

@@ -0,0 +1,48 @@
+/* GMODULE - GLIB wrapper code for dynamic module loading
+ * Copyright (C) 1998 Tim Janik
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+#ifndef __G_MODULE_CONF_H__
+#define __G_MODULE_CONF_H__
+
+
+#ifdef __cplusplus
+extern "C" {
+#pragma }
+#endif /* __cplusplus */
+
+
+#define	G_MODULE_IMPL_NONE	0
+#define	G_MODULE_IMPL_DL	1
+#define	G_MODULE_IMPL_DLD	2
+
+#define	G_MODULE_IMPL		@G_MODULE_IMPL@
+#undef	G_MODULE_HAVE_DLERROR
+#if	(@G_MODULE_HAVE_DLERROR@)
+#define	G_MODULE_HAVE_DLERROR
+#endif
+#if	(@G_MODULE_NEED_USCORE@) || defined (hp9000s300) || defined (__hp9000s300) || defined (__hp9000s300__)
+#define	G_MODULE_NEED_USCORE
+#endif
+
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+
+#endif /* __G_MODULE_CONF_H__ */

gmodule/libgplugin_a.c

@@ -0,0 +1,63 @@
+/* libgplugin_a.c - test plugin for testgmodule
+ * Copyright (C) 1998 Tim Janik
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+#include	<gmodule.h>
+
+G_MODULE_EXPORT void
+gplugin_a_func (void)
+{
+  g_print ("GPluginA: Hello world\n");
+}
+
+G_MODULE_EXPORT void
+gplugin_clash_func (void)
+{
+  g_print ("GPluginA: Hello plugin clash\n");
+}
+
+G_MODULE_EXPORT void
+g_clash_func (void)
+{
+  g_print ("GPluginA: Hello global clash\n");
+}
+
+G_MODULE_EXPORT void
+gplugin_say_boo_func (void)
+{
+  g_print ("GPluginA: BOOH!\n");
+}
+
+void
+gplugin_a_module_func (GModule *module)
+{
+  void(*f)(void) = NULL;
+  gchar *string;
+
+  string = "gplugin_say_boo_func";
+  g_print ("GPluginA: retrive symbol `%s' from \"%s\"\n",
+	   string,
+	   g_basename (g_module_name (module)));
+  if (!g_module_symbol (module, string, &f))
+    {
+      g_print ("error: %s\n", g_module_error ());
+      exit (1);
+    }
+
+  g_print ("GPluginA: call that function(%p): ", f);
+  f ();
+}

gmodule/libgplugin_b.c

@@ -0,0 +1,43 @@
+/* libgplugin_b.c - test plugin for testgmodule
+ * Copyright (C) 1998 Tim Janik
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+#include        <gmodule.h>
+
+G_MODULE_EXPORT void
+gplugin_b_func (void)
+{
+  g_print ("GPluginB: Hello world\n");
+}
+
+G_MODULE_EXPORT void
+gplugin_clash_func (void)
+{
+  g_print ("GPluginB: Hello plugin clash\n");
+}
+
+G_MODULE_EXPORT void
+g_clash_func (void)
+{
+  g_print ("GPluginB: Hello global clash\n");
+}
+
+G_MODULE_EXPORT void
+gplugin_say_boo_func (void)
+{
+  g_print ("GPluginB: BOOH!\n");
+}

gmodule/testgmodule.c

@@ -0,0 +1,170 @@
+/* testgmodule.c - test program for GMODULE
+ * Copyright (C) 1998 Tim Janik
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+#include	<gmodule.h>
+
+
+void
+g_clash_func (void)
+{
+  g_print ("GModule: Hello global clash\n");
+}
+
+typedef	void (*SimpleFunc) (void);
+typedef	void (*GModuleFunc) (GModule *);
+
+SimpleFunc gplugin_clash_func;
+
+     
+int
+main (int   arg,
+      char *argv[])
+{
+  GModule *module_self, *module_a, *module_b;
+  gchar *string;
+  gchar *plugin_a, *plugin_b;
+  SimpleFunc f_a, f_b, f_self;
+  GModuleFunc gmod_f;
+
+  string = g_get_current_dir ();
+  g_print ("testgmodule (%s):\n", string);
+
+  plugin_a = g_strconcat (string, "/.libs/", "libgplugin_a.so", NULL);
+  plugin_b = g_strconcat (string, "/.libs/", "libgplugin_b.so", NULL);
+  g_free (string);
+
+  /* module handles
+   */
+  g_print ("get main module handle\n");
+  module_self = g_module_open (NULL, G_MODULE_BIND_LAZY);
+  if (!module_self)
+    {
+      g_print ("error: %s\n", g_module_error ());
+      return 1;
+    }
+  g_print ("load plugin from \"%s\"\n", plugin_a);
+  module_a = g_module_open (plugin_a, G_MODULE_BIND_LAZY);
+  if (!module_a)
+    {
+      g_print ("error: %s\n", g_module_error ());
+      return 1;
+    }
+  g_print ("load plugin from \"%s\"\n", plugin_b);
+  module_b = g_module_open (plugin_b, G_MODULE_BIND_LAZY);
+  if (!module_b)
+    {
+      g_print ("error: %s\n", g_module_error ());
+      return 1;
+    }
+
+  /* get plugin specific symbols and call them
+   */
+  string = "gplugin_a_func";
+  g_print ("retrive symbol `%s' from \"%s\"\n", string, g_basename (g_module_name (module_a)));
+  if (!g_module_symbol (module_a, string, &f_a))
+    {
+      g_print ("error: %s\n", g_module_error ());
+      return 1;
+    }
+  string = "gplugin_b_func";
+  g_print ("retrive symbol `%s' from \"%s\"\n", string, g_basename (g_module_name (module_b)));
+  if (!g_module_symbol (module_b, string, &f_b))
+    {
+      g_print ("error: %s\n", g_module_error ());
+      return 1;
+    }
+  g_print ("call plugin function(%p) A: ", f_a);
+  f_a ();
+  g_print ("call plugin function(%p) B: ", f_b);
+  f_b ();
+
+  /* get and call globally clashing functions
+   */
+  string = "g_clash_func";
+  g_print ("retrive symbol `%s' from \"%s\"\n", string, g_basename (g_module_name (module_self)));
+  if (!g_module_symbol (module_self, string, &f_self))
+    {
+      g_print ("error: %s\n", g_module_error ());
+      return 1;
+    }
+  g_print ("retrive symbol `%s' from \"%s\"\n", string, g_basename (g_module_name (module_a)));
+  if (!g_module_symbol (module_a, string, &f_a))
+    {
+      g_print ("error: %s\n", g_module_error ());
+      return 1;
+    }
+  g_print ("retrive symbol `%s' from \"%s\"\n", string, g_basename (g_module_name (module_b)));
+  if (!g_module_symbol (module_b, string, &f_b))
+    {
+      g_print ("error: %s\n", g_module_error ());
+      return 1;
+    }
+  g_print ("call plugin function(%p) self: ", f_self);
+  f_self ();
+  g_print ("call plugin function(%p) A: ", f_a);
+  f_a ();
+  g_print ("call plugin function(%p) B: ", f_b);
+  f_b ();
+
+  /* get and call clashing plugin functions
+   */
+  string = "gplugin_clash_func";
+  g_print ("retrive symbol `%s' from \"%s\"\n", string, g_basename (g_module_name (module_a)));
+  if (!g_module_symbol (module_a, string, &f_a))
+    {
+      g_print ("error: %s\n", g_module_error ());
+      return 1;
+    }
+  g_print ("retrive symbol `%s' from \"%s\"\n", string, g_basename (g_module_name (module_b)));
+  if (!g_module_symbol (module_b, string, &f_b))
+    {
+      g_print ("error: %s\n", g_module_error ());
+      return 1;
+    }
+  g_print ("call plugin function(%p) A: ", f_a);
+  gplugin_clash_func = f_a;
+  gplugin_clash_func ();
+  g_print ("call plugin function(%p) B: ", f_b);
+  gplugin_clash_func = f_b;
+  gplugin_clash_func ();
+
+  /* call gmodule function form A
+   */
+  string = "gplugin_a_module_func";
+  g_print ("retrive symbol `%s' from \"%s\"\n", string, g_basename (g_module_name (module_a)));
+  if (!g_module_symbol (module_a, string, &gmod_f))
+    {
+      g_print ("error: %s\n", g_module_error ());
+      return 1;
+    }
+  g_print ("call plugin A's module function(%p):\n{\n", gmod_f);
+  gmod_f (module_b);
+  g_print ("}\n");
+
+  
+  /* unload plugins
+   */
+  g_print ("unload plugin A:\n");
+  if (!g_module_close (module_a))
+    g_print ("error: %s\n", g_module_error ());
+  g_print ("unload plugin B:\n");
+  if (!g_module_close (module_b))
+    g_print ("error: %s\n", g_module_error ());
+
+  return 0;
+}